iOS "Low Power " mode. What it is and how to use it correctly

With Android 5 Google introduced a "power saving" mode on their smartphones. This low-power mode disables many processes and services in order to allow the user to take full advantage of their battery. With the launch of iOS 9, Apple has also developed a similar feature for their iPhone (not for iPad) with which to increase the autonomy of the same in the critical phases of this.

maxresdefault (5)The low-power iOS 9 mode is automatically activated when the function is activated and the battery charge reaches below 20%. Once our iPhone enters this mode is automatically configured so that the lowest possible battery is spent, increasing its autonomy by more than 3 hours.

In the section Adjustments> Battery we will see this option, you can activate or deactivate it manually if we want, instead of waiting for the battery to reach the 20% level.


To do this they deactivate a series of functions and characteristics that we will see next:

  • Disables the constant automatic update of the email application.
  • Reduces screen brightness.
  • Reduces the time until the screen locks and turns off.
  • It allows other applications to know that the device is in "energy-saving" mode and to deactivate animations and effects.
  • Animated effects and backgrounds are turned off.
  • Connectivity (data/wifi) goes too low consumption, preventing connections from being established while the phone is suspended.
  • The maximum speed of the CPU and GPU is reduced.

As we can see, this mode of energy saving is very aggressive and drastically reduces the experience of using iOS, so it is not recommended to have it constantly activated and use it only when the battery level is critical and we have to save the load so Maximum possible.

All limitations of the "power saving" mode are automatically disabled as soon as the iPhone is connected to the charger.

How to set up a "Low power consumption" manually in previous versions of iOS

If we do not want to use this low power mode automatically, as it comes natively in iOS 9, we can manually configure our system to get very similar results. For this we must configure our iPhone with iOS in the following way:

  • Disable auto-check email: If we have an email account associated with our iOS device, it will be constantly searching for new messages to receive them as soon as possible. If we do not wait for any critical messages we can deactivate this function.
  • Reduce screen brightness to a minimum: The lower the screen brightness of a smartphone the less it spends. If we take into account that the screen is the most spend today a smartphone, reducing its brightness to a minimum we can use the device for longer without draining the battery.
  • Reduce waiting time to self-lock: When we use the smartphone the screen and several processes are left open. After several seconds or minutes, the smartphone automatically locks up by disabling the screen and blocking many of the processes and services in the background. We can reduce the waiting time for this to happen automatically in less time, avoiding unnecessary battery costs.
  • Disable background application updates. Many applications run in the background to update or remain loaded in memory so the user can run them faster. These applications spend battery when running in the background, so we must disable this feature to save battery.

A very useful tip is that iOS 9 users do not turn on the screen when notifications arrive and the device is face-down, so if we leave the phone face down when it is close to us we can save several minutes of battery charge.

Ready. Once these settings are made on our iOS smartphone, it will behave in a similar way as if it had the low power feature enabled. This method is not 100% effective since some options like CPU and GPU processing limitation can not be enabled by default and are only limited by the native low power iOS function.